Cara plays Melanie, who becomes caught up with director Thomas Lang (Daniel Bruhl) as he becomes embroiled in the frenzy surrounded the case.

Lang is working on a film adaptation of a book by American journalist Simone Ford (Kate Beckinsale) which looks at the controversial trial of student Jessica Fuller for the murder of flatmate Elizabeth Pryce.

The story of the movie is based on the book Angel Face, penned by Barbie Latz Nadeau, which looked at the case of Kercher's murder and the story of Knox.

Amanda Knox arrives at her trial for the murder of British student Meredith Kercher in Perugia January 16, 2009 (Photo: Reuters)

In another update on the sequel to the 2001 hit comedy, he told MTV last year: "There is a script, I won't deny there's a script, and there's been a reading of the script... but it hasn't yet been fully formulated."